You could do a retrofit and not drill the 7/8 hole for the down tube. Just the 4 mounting holes. And either cut the Yamaha post to the desired length ( non adjustable) or use a double post where the height is adjustable on the short arm
If you're going to use the arm with the tom YESS mount, you want the CL-945LB. If you're going to mount the tom holder directly to the shell, then use the CL-940LB. Here's my custom painted Pearl kit, with a retrofitted YESS mount and CL-945LB. Hope this helps.